In the given figure, identify the concentric circles and determine their properties. Explain how you arrived at your conclusion.

  

Two concentric circle of radius 3 cm and 4 cm, intersect in

Priyanka finds this piece of a circular disc in her grandma’s trunk.

She wants to find the diameter of the disc.

What could Priyanka do to find the diameter of the disk?

The difference between the circumferences of two concentric circles is $132 \mathrm{cm}$ and the radius of smaller circle is $14 \mathrm{cm}.$ Find the radius of larger circle. [Take $\mathrm{\pi }=\frac{22}{7}$]

In the given figure, identify the non concentric circles.

If a line intersects two concentric circles (circles with the same centre) with centre $O$ at $\mathrm{A}, \mathrm{B}, \mathrm{C}$ and $\mathrm{D},$ prove that $\mathrm{A}\mathrm{B}=\mathrm{C}\mathrm{D}.$

Identify the figure that consists of concentric circles from figures $A,B,C$

Concentric circles can have different centres.